Bug ID 427840: dnatutil time format is timezone agnostic

Last Modified: Oct 17, 2023

Affected Product(s):
BIG-IP CGN(all modules)

Known Affected Versions:
11.4.0, 11.4.1

Fixed In:

Opened: Aug 13, 2013

Severity: 3-Major

Related Article: K14674


dnatutil is not able to use --start_time/--end_time correctly when the timestamp is provided in a different time zone than the local-time time zone.


time matching for reverse lookup


When use-provided values for --start_time or --end_time contain a time zone that is different than the time zone of the machine the dnatutil is being run on.


1) Convert the desired time-frame to the local-time time zone for time matching. 2) Use the TZ environment variable to modify the time zone of the host; see man tzset for more information.

Fix Information

HSL log entries for deterministic NAT now contains unix-time, which can be use by dnatutil without timezone conversion.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips